INS V. ST. CYR[Syllabus] Amendments that the Antiterrorism and Effective Death Penalty Act of 1996 and the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 made to the Immigration and Nationality Act did not affect the federal courts' habeas jurisdiction to decide pure questions of law; nor did they affect the availability of discretionary relief from deportation for aliens whose convictions were obtained through plea agreements before the amendments' effective dates.

TUAN ANH NGUYEN V. INS[Syllabus] Title 8 U. S. C. §1409, which provides different citizenship rules for children born abroad and out of wedlock to one United States citizen and one noncitizen depending on whether the citizen parent is the mother or the father, is consistent with the equal protection guarantee embedded in the Fifth Amendment's Due Process Clause.

DEMORE V. KIM[Syllabus]Whether respodent's mandatory detention under Section 1226 ( c) violates the Due Process Clause of the Fifth Amendment, where respondent was convicted of an aggravated felony after his admission into the United States.

HOFFMAN PLASTIC COMPOUNDS, INC. V. NLRB[Syllabus] Federal immigration policy, as expressed in the Immigration Reform and Control Act of 1986, foreclosed the National Labor Relations Board from awarding backpay to an undocumented alien who was never legally authorized to work in the United States.

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CALCANO-MARTINEZ V. INS[Syllabus] The Illegal Immigration Reform and Immigrant Responsibility Act of 1996 precludes courts of appeals from exercising jurisdiction to review a final removal order against aliens removable by reason of aggravated felony convictions, but such aliens may pursue habeas relief in the district court.

ZADVYDAS V. DAVIS[Syllabus] The post-removal-period detention statute, read in light of the Constitution's demands, implicitly limits an alien's detention to a period reasonably necessary to bring about that alien's removal from the United States, and does not permit indefinite detention; the application of that limitation is subject to federal court review.